Lock



FIG. 1 is a front perspective view of another lock showing my new design;

FIG. 2 is a rear perspective view of the lock of FIG. 1;

FIG. 3 is a top view of the lock of FIG. 1;

FIG. 4 is a front elevational view of the lock of FIG. 1;

FIG. 5 is a rear elevational view of the lock of FIG. 1;

FIG. 6 is a bottom view of the lock of FIG. 1;

FIG. 7 is a left side elevational view of the lock of FIGS. 1; and,

FIG. 8 is a right side elevational view of the lock of FIG. 1.

The broken lines in the figures depict environment only and form no part of the claimed design. 

I claim the ornamental design for a lock, as shown and described. 